题目内容：
下列关于通气/血流比值的描述，下列选项错误的是 （ ）
A．安静时正常值为0.84
B．比值减少，意味着肺泡无效腔增大
C．肺下部减小
D．肺尖部增犬，可达3以上
E．肺动脉栓塞时，比值增大
参考答案：
选择题：下列关于通气／血流比值的描述,下列选项错误的是 ( )
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